| Answers Private Detective Agency: Austell, Georgia detective agency offering polygraph examinations. |
| Australian Polygraph Services: Polygraph examiners serving Australia and the Asia Pacific region. |
| Centre for Forensic Psychophysiology Ltd.: Inter-disciplinary team of forensic psychologists and computer scientists operating throughout the European Union. |
| Cops, Inc.: Hagerstown, Maryland, polygraph and investigation agency. |
| Distress Services UK: Polygraph examiner in Leatherhead, Surrey, UK. |
| Imbordino Polygraph Examinations, LLC: Certified polygraph testing service based in Georgia, but examinations can be administered anywhere. Expert polygraph witness and former federal polygraph supervisor. |
| IQM Inc.: Fort Worth polygraph examiners serving clients in North Texas. |
| J R Investigations: Los Angeles, California, polygraph examination administered by Louis Rovner, Ph.D. |
| John M. Hurlock, LLC: Private polygraph examiner near Kansas City, Missouri. |
| Leonard Bierman & Associates: Examiner with offices in Plantation and Miami Lakes, Florida. |
| Michael D. Park & Associates Polygraph: Dallas, Texas examiners performing assessments for domestic infidelity, employee theft, and attorney/client examinations. |
| National Polygraph Consultants, LLC: Polygraph quality control, training, program development, testing, and other services. |
| Nationwide Investigations Group: Oxford, UK, based examiners serving the UK and Europe. |
| Neal Investigations and Polygraph: Polygraph examiner and licensed private investigator based in California. |
| Polygraph Investigative Services: Singapore polygraph company providing polygraph testing services and training. |
| Shaffer and Associates Forensic Technologies: Computerized polygraph investigation and screening with three Florida offices in Merritt Island, Ft. Pierce, and Orlando. |
| Southwest Polygraph Service: Fort Worth, Texas agency advertising polygraph examinations, instant drug tests, and psychological profile analysis. |
| Truth or Lie Polygraph Examination Agency: Computerized polygraph agency in Southern California. |
| Wygant Polygraph: James R. Wygant, retired polygraph examiner in Portland, Oregon who still teaches and does presentations. |
Classical
